Rule 47a. Section 4.3.15 of the ASME A17.1 code is amended to read as follows:
The car safety device is not required to be operated by a speed governor, and may be of the instantaneous type operated as a result of the breaking or slackening of the suspension members.
Where the rise exceeds 12.5m (40 ft), driving machines having hand-operated brakes shall also be equipped with an automatic speed retarder.
Mich. Admin. Code R. 408.7047a